The way the forum works is that you try and do your project yourself and if you get stuck people here will try and help.
I understand why a camera would be useful but I don't understand why the panel suggested it instead of "annoying notifications".
If you think about a house 99.99% of the time nothing worth worrying about is happening so you would be completely wasting your time looking at the camera output. What you want is a notification to tell you the PIR has detected motion then you look at the camera, that way you only look at the camera when something interesting is actually happening.
Using the camera you can then tell if it is a false alarm such as a deer setting of the PIR or if the police need to be called.